Ultrasoft quark damping in hot QCD

A. Abada; N. Daira-Aifa; K. Bouakaz

doi:10.1142/S0217751X06033052

Ultrasoft quark damping in hot QCD

A. Abada
, N. Daira-Aifa
, K. Bouakaz

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We determine the quark damping rates in the context of next-to-leading order hard-thermal-loop summed perturbation of high-temperature QCD where weak coupling is assumed. The quarks are ultrasoft. Three types of divergent behavior are encountered: infrared, light-cone and at specific points determined by the gluon energies. The infrared divergence persists and is logarithmic whereas the two others are circumvented.

Original language	English
Pages (from-to)	5317-5331
Number of pages	15
Journal	International Journal of Modern Physics A
Volume	21
Issue number	26
DOIs	https://doi.org/10.1142/S0217751X06033052
Publication status	Published - Nov 20 2006

Keywords

Hard thermal loops
Logarithmic infrared sensitivity
Ultrasoft quark damping

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Astronomy and Astrophysics

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10.1142/S0217751X06033052

Cite this

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AU - Daira-Aifa, N.

AU - Bouakaz, K.

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N2 - We determine the quark damping rates in the context of next-to-leading order hard-thermal-loop summed perturbation of high-temperature QCD where weak coupling is assumed. The quarks are ultrasoft. Three types of divergent behavior are encountered: infrared, light-cone and at specific points determined by the gluon energies. The infrared divergence persists and is logarithmic whereas the two others are circumvented.

AB - We determine the quark damping rates in the context of next-to-leading order hard-thermal-loop summed perturbation of high-temperature QCD where weak coupling is assumed. The quarks are ultrasoft. Three types of divergent behavior are encountered: infrared, light-cone and at specific points determined by the gluon energies. The infrared divergence persists and is logarithmic whereas the two others are circumvented.

KW - Hard thermal loops

KW - Logarithmic infrared sensitivity

KW - Ultrasoft quark damping

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M3 - Article

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EP - 5331

JO - International Journal of Modern Physics A

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Ultrasoft quark damping in hot QCD

Abstract

Keywords

ASJC Scopus subject areas

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